helianthoideæ

Definitions

from The Century Dictionary and Cyclopedia

A tribe of plants established by Bentham and Hooker, belonging to the natural order Compositæ., distinguished by a chaffy receptacle, anthers mostly sagittate, pappus never of fine bristles, and leaves commonly opposite. It embraces about 150 genera, found in both hemispheres. The typical genus is Helianthus.